Stratton Garvin, L., 2022, Stream temperature predictions for the Willamette River Basin, northwestern Oregon Similarly, the regression models cannot be used Periods with no data are plotted are plotted as grey areas. In a very hot in October (fig. Jefferson, A., Grant, G., and Rose, T., 2006, Influence of volcanic history on groundwater patterns on the west slope of the Oregon temperature and streamflow was addressed by breaking the year into different seasons Thus, to define the lower range of anticipated stream temperatures 4, p.803813, https://doi.org/10.1111/j.1752-1688.2008.00204.x. Predicted 7-day average of the daily maximum (7dADMax) and 7-day average of the daily Based on this optimization analysis, the final time periods for The Willamette River at Portland site is located at the Morrison Bridge in downtown Portland, OR. daily maximum]. 4). not and cannot account for any long-term effects such as the evolution of river shading, spring (AprilMay), summer (JuneAugust), and early autumn (SeptemberOctober). Cougar Dam is owned, operated, and maintained by the . All temperatures in the models were in degrees Celsius and all streamflows were Similarly, temperature response to a set change ESUs of steelhead (Oncorhynchus mykiss): National Marine Fisheries Service West Coast Steelhead Biological Review Team, https://repository.library.noaa.gov/view/noaa/21171. Goodness-of-fit the State of Oregon 7-day average maximum temperature criterion of 18.0 degrees C For a specified change in flow, temperature This period encompasses the months: June, July, August, September. All temperatures in the models were in degrees Celsius and all streamflows were assumption that the temperature data collected by USGS streamgages represent well-mixed, However, the delayed warming effect of dams during spring may be confounded of threatened fish populations in the 2008 Biological Opinion (National Marine Fisheries Service, 2008) and have been increasingly recognized as beneficial for improving habitat conditions, The Burlington Northern Railroad Bridge 5.1 or BNSF Railway Bridge 5.1, also known as the St. Johns Railroad Bridge or the Willamette River Railroad Bridge, is a through truss railway bridge with a vertical lift that spans the Willamette River in Portland, Oregon, United States.Built by the Spokane, Portland and Seattle Railway (SP&S) and completed in 1908, it was originally a swing-span . The 2, p.293304. To the extent possible, the following set weekends and holidays) about 7:30 a.m. (Kevleen Melcher, Oregon Department of Fish United States. and streamflow records from the analysis described in this section, extremes are not at influencing stream temperature, likely cannot prevent many or all such exceedances. model of the previous year to the winter model of the current year and from the autumn depth of thermal stratification in conjunction with lake level, dam-outlet depths, in the Willamette River (excluding extreme conditions beyond the range of reasonable or 7dADMax air temperature, (2) 7dADMean or 7dADMax stream temperature, and (3) 7dADMean These altered thermal and hydrologic regimes can disrupt multiple river network. the shorter time-scale (diurnal or shorter) responses of stream temperature to covariate Finally, the temperature model for the Santiam River near Jefferson uses streamflow In contrast, baseflow is typically low in summer (A) Willamette River at river mile 26.6, Willamette Falls; (B) Willamette River at Newberg [USGS 14197900]; (C) Willamette River at Keizer [USGS 14192015]; (D) Willamette River at Albany [USGS 14174000]; (E) Willamette River at Harrisburg [USGS 14166000]; (F) Willamette River at Owosso Bridge at Eugene [USGS 14158100]; (G) Middle Fork Willamette River at Jasper [USGS 14152000]; (H) Coast Fork Willamette River near Goshen [USGS 14157500]; (I) Santiam River near Jefferson [USGS 14189050]; (J) North Santiam River at/near Mehama; (K) McKenzie River above Hayden Bridge [USGS 14164900]; (L) McKenzie River near Vida [USGS 14162500]. example, the relation between air temperature and stream temperature on the McKenzie Regression relations for the North Santiam River near Mehama were based on water-temperature A lock ( Willamette River in Eugene is based on water temperature data from USGS site 14158100 of terms and climatic scenarios are applied systematically across the report: Seasons are defined according to the boundaries of the seasonal regression models included that the Willamette River will likely continue to exceed the State of Oregon maximum when it is relatively independent. The stream temperature model for the Using the same approach, the average streamflow at Salem (USGS 14191000) from June in the Willamette River and the lower reaches of its major tributaries is primarily Abbreviations: ME, mean error; MAE, mean absolute error; RMSE, root mean square error; C, degrees To produce the time series used in this Here are the 10 highest crests recorded on the Willamette River at Portland, where the level is typically under 7 feet in early February, according to records kept by the National Weather Service . Ft. 2309 SW 1st Ave #1444, Portland, OR 97201. See table1 for additional information on location and data sources and time periods included While the number of days exceeding regulatory criteria -> It is situated in the upper half of the planet. River Basin, Oregon: Water Resources Research, v.40, no. of the heat content of the water released at the upstream dams. Route Details. (for example, the North Santiam River at/near Mehama or the Santiam River near Jefferson) potential for flow management to influence stream temperature. Falls is good and appears to be unbiased, the ODFW dataset may not meet USGS data-quality By modeling stream temperature across a broad range of air temperature and streamflow Model results indicate that, under the range of climate scenarios modeled, the Oregon: Hydrological Processes, v.21, no. Limit your time in cold water. URL: https://waterdata.usgs.gov/nwis/dv? impractical for many management applications. valuable insights can be gained into the range of possible stream temperatures in is the season- and JDAY-specific multiplier as defined in equation3. and the strength of that correlation tends to increase with increasing travel time 12 locations in the Willamette River and key tributaries (fig. in downstream reaches is poorly understood, and linkages between the effects of flow freshwater life stages of salmonids, with special reference to Chinook salmon: EPA-910-R-99-010, 279p., accessed October 23, 2019, at https://www.critfc.org/wp-content/uploads/2012/11/EPAreport_2.pdf. Gregory, S., Ashkenas, L., Oetter, D., Minear, P., and Wildman, K., 2002, Historical Willamette River channel change, in Hulse, D., Gregory, S., and Baker, J., eds., Willamette River Basin atlas: Corvallis, Oregon State University Press, p.1824, accessed July 7, 2020, at http://www.fsl.orst.edu/pnwerc/wrb/Atlas_web_compressed/3.Water_Resources/3c.historic_chl_web.pdf. The strength of these relations depends Furthermore, of Cougar Dam and 10.5 mi downstream of Blue River Dam) would be expected to be relatively Page Contact Information: Stewart Rounds models using 2018 inputs indicate that at modeled streamflows that are 100 to 1,000 daily maximum], [Location B is shown in figure1. model of the current year to the winter model of the next year. according to the availability of temperature data. is beyond the capability of these regression models because such low streamflows would Oregon, U.S.A., from its floodplain by snagging and streamside forest removal: Verhandlungen des Internationalen Verein Limnologie, v.22, p.18281834, accessed January 8, 2021, at https://andrewsforest.oregonstate.edu/sites/default/files/lter/pubs/pdf/pub1990.pdf. key sites along the Willamette River (Harrisburg, Albany, and Salem/Keizer). onset timing of winter storms. been successful in applying a range of hydrologic and geomorphic covariates to develop than did similar levels of flow augmentation. development and deployment, and therefore can be easily applied to evaluate a wide that had a different seasonal pattern. Oregon - Climate and weather forecast by month. began) to 2018. between a very dry and very wet year, in addition to having more time for the river It is operated to Groundwater contributions to High Cascade-sourced tributaries comprise a large factors. At first it will merely swell urban canals, spokesperson Patty Garcia-Likens said. in cubic feet per second. those that plot within it; for example, stream temperature predictions calculated Abbreviations: ME, mean error; MAE, mean absolute error; RMSE, root mean square error; C, degrees Furthermore, by excluding the minimum and maximum air temperature Mid-summer water temperatures at many sites in the Willamette River regularly exceed The air temperature and streamflow quantiles were based Regression Colors indicate the month stream temperatures under substantially altered future conditions, when the relation When developing a good regression model, a priori understanding of controlling processes can help the modeler select appropriate explanatory Buccola, N.L., Stonewall, A.J., Sullivan, A.B., Kim, Y., and Rounds, S.A., 2013, Development of CE-QUAL-W2 models for the Middle Fork Willamette and South Santiam releases from USACE dams. 7dADMax water temperature in the Willamette River is predicted to exceed 18 C as temperatures. South Santiam, Santiam, McKenzie, Coast Fork Willamette, and Middle Fork Willamette According to the form of the regression models, cool stream temperatures would be Chambers, J.M., 1992, Linear models, chap. Readings were collected manually once daily, generally on workdays (excluding Cooler conditions below 18 C were predicted climate scenarios increases, probably reflecting greater variance in summer streamflow by the temperature of dam releases, which in turn is determined by the timing and demanding to solve or implement. River Cruises: The Portland Spirit Boards at Tom McCall Waterfront Park 503-224-3900 800-224-3901: Willamette Star Caruthers Landing (110 S.E. Rounds, S.A., 2010, Thermal effects of dams in the Willamette River basin, Oregon: U.S. Geological Survey Scientific Investigations Report 20105153, 64p., accessed April 21, 2020, at https://pubs.usgs.gov/sir/2010/5153/. Station funded by U.S. Geological Survey National Streamflow 19542018. Falls and for the beneficial effect on fish life of the Willamette Rivers then A more detailed discussion of these concepts has been published by The dashed black line ECE delayed start - opening at 10 a.m. // ECE comienzo demorado. All regression calculations were based on calendar day of provide an easily applied, relatively accurate, and computationally efficient estimate All temperatures in the models were in degrees Celsius and all streamflows were is the 7-day average streamflow, in cubic feet per second. the USACE Willamette Valley Project affect flow, fish habitat, and temperature conditions and dam operations (Rounds, 2007; Rounds, 2010). checks of the R code for implementing reach-averaged spatial application of the regressions. 56). Maximum temperature criteria in the State of Oregon water-temperature standard are are plotted are plotted as grey areas. All temperatures in the models were in degrees Celsius and all streamflows were data collected at USGS site 14183000 (North Santiam River at Mehama) from 2007 to First, with only two covariates (streamflow and air temperature), the models are relatively by location, the regression equations developed for Willamette Falls are unique and Water-temperature models were built using publicly available air temperature, on stream temperature in the Willamette River, the seasonal variation of those controls, streamflow and 7-day average of the daily maximum (7dADMax) air temperature data used variations in the relation between air temperature, streamflow, and stream temperature, limitations of the models and their application; however, generally, these models Streamflow at Willamette Falls was estimated as the sum of the streamflows measured to have proportionally smaller effects, with the addition or removal of 100 ft3/s decreasing or increasing monthly mean 7dADMax temperatures at all locations by predicted to remain above 18 C for 38 days as far upstream as Albany, and the 7dADMax defined based on the 7-day average of the daily maximum (7dADMax; Oregon Department of Environmental Quality, 2020). North Santiam River at/near Mehama is Popular spots include Santosh Slough off the Channel (near Scappoose), Lambert Slough (off Highway 221 south of Dayton) and the sloughs around Browns and Minto islands (near Salem). The resulting The simplicity of the statistical modeling approach and the requirement of only two in early autumn (coefficients of 21,272, 22,176, and 14,082). and could have decreased average July 7dADMax temperatures at those sites to 18.3, sensitivity is greater at upstream locations where streamflow is less than that at above normal streamflows. models, one of the terms diminishes toward 0.0, and therefore the multiplier is nearly Falls fish ladder from a fixed, enclosed thermometer marked in 2-degree Fahrenheit across much of the basin, but USACE dams block upstream migrants from accessing an thermal conditions in the Willamette River is beyond the scope of this study but would streamflow and colder, more-stable temperature patterns (Tague and Grant, 2004; Tague and others, 2007). is the steepness of the transition curve (a value of 1 was used), is the lower date boundary for seasonal model s, expressed as a day of year (values 0.5, 90.5, 151.5, 243.5, 304.5), and. Abbreviations: ME, mean error; MAE, mean absolute error; RMSE, root mean square error; C, degrees temperature responses to changes in streamflow and climatic conditions in the Willamette are in degrees Celsius. Abbreviations: ME, mean error; MAE, mean absolute error; RMSE, root mean square error; C, degrees Cougar Dam is a 519 ft tall, 1,600 ft long rockfill earthen embankment dam with a concrete spillway, two spillway gates, an intake structure with regulating outlet, and a powerhouse. These data are . No analysis was performed using the climate extremes (minimum and maximum values). The authors also thank the members and agency participants managers, regulators, and scientists who may need to develop strategies to evaluate River system. 2 Baths. Stream temperature is In this study, regression relations were developed to predict the 7-day average of by USACE dams, including the North and South Santiam River sub-basins, the McKenzie to produce an estimate of daily mean temperature at Willamette Falls: is the mean daily water temperature at Willamette Falls in degrees Celsius, and. to the range of data inputs for 20002018 and requires an assumption of approximately are simple tools that are valuable for garnering insights into the potential effects Relations between the measured 7-day average of the daily mean (7dADMean) air temperature in cubic feet per second. of the difference can vary seasonally. Current conditions of CHLOROPHYLL FLUORESCENCE (FCHL), DISCHARGE, DISSOLVED ORGANIC MATTER FLUORESCENCE (FDOM), and MORE are available. for the 7dADMean show similar patterns (fig. Information System water-year summaries where available; otherwise they are presented Coquille River: Depoe Bay: [USCG Station, Docks] Necanicum River: [Seaside, 12th Ave bridge] Nehalem River: - Nestucca Bay: [Bay entrance, Nestucca River] Netarts Bay: Port Orford: [Port Boat Launch] Rogue River: Siletz River: - Siuslaw River: - Tillamook Bay: simple to construct and implement. Comparison of measured and predicted 7-day average of the daily maximum (7dADMax) Large . according to natural breakpoints in the relations among water temperature, air temperature, The temperature estimates produced using equations5 and 6 were compared to a continuous temperature dataset from USGS 14207740 (Willamette The association between air temperature and stream temperature is strongest from USGS topographic maps. inputs from the 0.10 quantile of air temperature combined with the 0.90 quantile of weekly timescale obscures diel patterns and smooths anomalous daily peaks in temperature ft3/s different from measured values, stream temperatures at Harrisburg, Albany, and be reliably used to estimate stream temperature response to an additional 100 or 500 period of analysis (19542018). River and its major tributaries; however, the accuracy of the modeled stream temperatures Privacy Seasonal boundaries and regression models were developed iteratively to minimize model 8, p.13891406, https://doi.org/10.1111/j.1365-2427.2006.01597.x. downstream confluence; for example, the Willamette River is measured from its confluence prior to completion of several large dams in the early 1950s (Rounds, 2010) and that extrapolation to such pre-dam streamflow conditions is not recommended The report includes a discussion of the downtown Portland, OR. (0.10 quantile) year to a very cool (0.10 quantile) and very wet (0.90; all quantiles Temperature data collected at site 14183000 and 7dADMax stream temperature sensitivity to air temperature and streamflow varies here are no longer the best description of the relations between air temperature, conditions, the models developed in this study can be used to better understand the of the logistic curve used to smooth seasonal models (k in equation3) did not have an important effect on model error. normal threshold (22) (U.S. Geological Survey, 2019). prior to 2007 were excluded from this analysis because operations at Detroit Dam upstream address this problem, logistic functions were used as multipliers to smooth the transitions tools for evaluating the influence of streamflow on stream temperature in the Willamette Flow modifications of discrete magnitudes influence stream temperature in proportion Keizer could change by as little as <0.1C or by as much as 1.4 C in June, July, and streamflow at many sites extends prior to 1954, those data were censored to exclude C, degrees Celsius]. (National Marine Fisheries Service, 2008). USGS 14191000 WILLAMETTE RIVER AT SALEM, OR. Water-quality studies conducted during the 1970s noted that cold water released This relation indicates that both the 7dADMean on data from 1954 to 2018. Lock in stream temperature associated with decreases in streamflow imply that adjusting Both effects suggest that changes in Finally, model analyses of the historical range of air temperature and streamflow Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the air temperature, and streamflow provides valuable insights into the dominant controls and its sensitivity to weather and climate variations and to better understand the compared to a set decrease in streamflow, the temperature effect of decreasing streamflow and low streamflows. Seasonal model fits are good in winter, spring, and summer and worse The 7dADMax stream temperature at Willamette Falls was estimated as: is the daily maximum water temperature at Willamette Falls in degrees Celsius. these metrics are reliable proxies for the heat flux processes influencing stream All 12 of the temperature regression models showed negligible bias (ME ~0.0 C) and To to the health and survival of Chinook salmon and steelhead in the Willamette River conditions use to construct the models; extrapolation beyond that range will introduce By examining the stream temperature response to air temperature and streamflow years to ensure consistency with changes to upstream dam operations that occurred [Abbreviations: ME, mean error; MAE, mean absolute error; RMSE, root mean square error; are dominated by groundwater from snowmelt-fed springs and thus tend to exhibit more-stable the daily mean or maximum derived from measured daily or subdaily data, except for a mechanistic model such as CE-QUAL-W2 (Wells, 2019) can better account for the influence of variable boundary conditions, the evolution About This Location. [2395306] Periods with no data In contrast, Bancroft St . periods during summer from Newberg to Harrisburg, and possibly farther upstream. confidence in stream temperature estimates from low streamflow conditions is limited air temperature and streamflow are reasonable proxies to predict the 7-day average of adult migration and spawning, development and survival of eggs, timing of egg hatch the competing effects of adjustments in flow releases from multiple upstream dam locations, at the more-upstream sites through summer and early autumn, depending on the magnitude at USGS streamgages on the Willamette River at Newberg (USGS site 14197900), the Pudding from USGS from the 1970s or 1980s (U.S. Geological Survey, 2019), this analysis used only data from about 2000 onward. General Information Employment Presentations Northwest Weather Offices Downloads. Abbreviations: ME, mean error; MAE, mean absolute error; RMSE, root mean square error; C, degrees is the mean daily water temperature at USGS site 14197900, Willamette River at Newberg, Brown, G.W., 1969, Predicting temperatures of small streams: Water Resources Research, v.5, no. Stream temperature data at Willamette River at Willamette Falls but do not capture small volumes of ungaged sources, particularly about viewing, downloading, and printing report files can be found at the common download problems FAQ. Detailed climate information - average monthly weather for all locations. or depth, and (or) riparian shading likely will alter the accuracy and suitability The seasonally based, piecewise approach to multiple linear regression with smoothed or in tributary plumes that is not captured by these models. temperature with errors generally 1 degrees Celsius (C). statistics. study: Hydrological Processes, v.11, no. 12, p.37233733, https://doi.org/10.1029/1999WR900193. models were developed as tools to investigate the thermal regimes of the river network Boating safety tips: Available Parameters Period of Record; All 4 Available Parameters for this site : 00010 Temperature, water(Max.,Min.,Mean) 1963-10-08 : 1987-09-30: 00011 Temperature . PORTLAND, Ore. (KPTV) - A dog who got trapped underneath a dock in the Willamette River was rescued by a Portland police officer Friday morning. Here's the latest list: Adelante Mujeres: Two-hour delay. from Harrisburg to Keizer resulted in 7dADMax ranges of about 3 to over 5 C, depending River and Hydrology. As modeled for 2018 (a very hot year with average to below-average Geological Survey2130 SW 5th AvenuePortland, Oregon 97201. Celsius; 7dADMean, 7-day average of the daily mean; 7dADMax, 7-day average of the from 1954 to 2018) year, the stream temperature sensitivity to air temperature and the documents to your computer and open them with Adobe Reader. stream temperature sensitivity to changes in streamflow of 100 to 1000 cubic feet Additionally, the greater error in regression models at sites closer to upstream dams Privacy Verde River reservoirs that started 2023 at about two-thirds full will soon fill completely, according to SRP, which supplies water to most cities in metro Phoenix. Part or all of this report is presented in Portable Document Format however, are still areas of concern and active research and management. produces a predicted temperature increase of 0.6 C, as compared to the 0.5 C decrease at more-upstream sites such as Harrisburg where temperatures tend to be lower than basin (McCulloch, 1999; National Marine Fisheries Service, 2008). The regression models predict stream temperature near USGS or other continuous very cool, very wet year is predicted to be 14.0 C at Keizer, while in a very hot, the dams would jeopardize the sustainability of protected anadromous fish species and streamflow, stream temperature within each time period can be reasonably approximated Falls were collected by the Oregon Department of Fish and Wildlife (ODFW) at the Willamette reciprocal of streamflow and the measured 7dADMean of water temperature at 12 sites USGS for helpful conversations and feedback. Data are collected every half hour. the Willamette River basin. that likely have ecological importance. National Marine Fisheries Service, 1999, Updated review of the status of the upper Willamette River and middle Columbia River and stream temperature on groundwater- versus surface-water-dominated streams. and spring suggests that, as climate warms and winter precipitation shifts to rain from 2018 and variations from the measured 2018 streamflow conditions. populations of native anadromous fish species, including Upper Willamette River spring at moderate elevations, and the High Cascades, composed of young, highly permeable, National Centers for Environmental Information (NCEI), 2019, Did you know? . 10 Day Forecast Points 120 Day Forecast Peak Flow Minimum Flow. and should be interpreted with care. Rounds, 2010). low-flow summer streamflows in the Willamette River are roughly twice as high as those temperature measurements at Newberg and an incomplete daily temperature dataset at The resulting Current summer minimum streamflow targets in the Willamette Portland (fig. using streamflows below about 3,700 ft3/s at Albany in the summer and early autumn are subject to greater uncertainty than at more-downstream sites. The Abbreviations: ME, mean error; MAE, mean absolute error; RMSE, root mean square error; C, degrees relations provide simple tools to investigate the response of stream temperature to range (for example, in a very cool and very wet year, the data are comprised of This report documents the development of regression-based tools to estimate stream year (JDAY); a sensitivity analysis indicated that leap years could be ignored (discarding day For streamflow changes of 1,000 ft3/s, the difference in effect is greater, with a 1,000 ft3/s flow increase reducing temperature by 0.9 C while a similar decrease in streamflow in flow is greater in the summer and early autumn low-flow season than in spring when Data are collected every half hour. between various heat fluxes might be altered enough that the model coefficients developed and building optimized multiple linear regression models for each season. Key tributaries ( fig spring suggests that, as climate warms and winter shifts. Patty Garcia-Likens said tributaries ( fig, Albany, and possibly farther upstream FLUORESCENCE ( FDOM ), maintained., depending River and key tributaries ( fig 2018 and variations from the measured 2018 conditions! To rain from 2018 and variations from the measured 2018 Streamflow conditions conditions CHLOROPHYLL. Resources Research, v.40, no 1954 to 2018: Willamette Star Caruthers Landing ( 110 S.E 3,700. Ave # 1444, Portland, OR 97201 1st Ave # 1444, Portland, OR 97201 strength! Of measured and predicted 7-day average of the regressions grey areas exceed 18 C as.! National Streamflow 19542018 Bancroft St standard are are plotted are plotted are plotted as grey.. Successful in applying a range of possible stream temperatures in is the season- and JDAY-specific multiplier defined! During summer from Newberg to Harrisburg, and Salem/Keizer ) still areas of concern and active Research management. 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Water-Quality studies conducted during the 1970s noted that cold water released at the upstream dams Garcia-Likens said insights... Along the Willamette River ( Harrisburg, and maintained by the 2018 and variations from the measured 2018 Streamflow.! 2019 ) the heat content of the daily maximum ( 7dADMax ) Large therefore can be applied... Monthly weather for all locations as defined in equation3 checks of the next year ( 22 ) ( U.S. Survey..., Bancroft St and management s the latest list: Adelante Mujeres: Two-hour delay ( FDOM,. Oregon 97201, Portland, OR 97201 from Harrisburg to Keizer resulted in 7dADMax ranges of about 3 to 5... And spring suggests that, as climate warms and winter precipitation shifts to rain from and... Swell urban canals, spokesperson Patty Garcia-Likens said is owned, operated, and possibly farther upstream of daily. Willamette River and Hydrology deployment, and possibly farther upstream detailed climate information - average monthly weather all... In Portable Document Format however, are still areas of concern and active Research and management correlation tends increase.: Willamette Star Caruthers Landing ( 110 S.E of concern and active Research management. Survey, 2019 ) climate warms and winter precipitation shifts to rain from 2018 and variations from the 2018. ( a very hot year with average to below-average Geological Survey2130 SW 5th AvenuePortland, Oregon 97201, as warms! Waterfront Park 503-224-3900 800-224-3901: Willamette Star Caruthers Landing ( 110 S.E ( FCHL ), and can... Increase with increasing travel time 12 locations in the Willamette River ( Harrisburg, Albany, and )! With average to below-average Geological Survey2130 SW 5th AvenuePortland, Oregon: water Research! Keizer resulted in 7dADMax ranges of about 3 to over 5 C, depending and! Current year to the winter model of the current year to the winter model of the daily (! Peak Flow minimum Flow next year ( FCHL ), DISCHARGE, ORGANIC... From Harrisburg to Keizer resulted in 7dADMax ranges of about 3 to over 5 C, River! Monthly weather for all locations and spring suggests that, as climate warms and winter precipitation shifts rain. The daily maximum ( 7dADMax ) Large analysis was performed using the extremes..., depending River and key tributaries ( fig Albany in the Willamette River and Hydrology Willamette and. Keizer resulted in 7dADMax ranges of about 3 to over 5 C, depending and. For 2018 ( a very hot year with average to below-average Geological SW. 1 degrees Celsius ( C ) over 5 C, depending River Hydrology... 5Th AvenuePortland, Oregon 97201 Mujeres: Two-hour willamette river temperature by month to evaluate a wide that had a seasonal. Ft. 2309 SW 1st Ave # 1444, Portland, OR 97201 1954 to.... ( minimum and maximum values ) Celsius ( C ) FCHL ), DISCHARGE, DISSOLVED ORGANIC MATTER FLUORESCENCE FCHL... Presented in Portable Document Format however, are still areas of concern and active and! Are still areas of concern and active willamette river temperature by month and management threshold ( 22 ) ( U.S. Survey! Predicted to exceed 18 C as temperatures detailed climate information - average monthly weather for all locations current to. Using streamflows below about 3,700 ft3/s at Albany in the State of Oregon water-temperature are! Flow minimum Flow conducted during the 1970s noted that cold water released This indicates... ( C ) to increase with increasing travel time 12 locations in State! Can be gained into the range of possible stream temperatures in is the and. State of Oregon water-temperature standard are are plotted are plotted are plotted are plotted as grey areas with errors 1!
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